startle response


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startle response

[′stärd·əl ri‚späns]
(physiology)
The complex, involuntary, usually spasmodic psychophysiological response movement of an organism to a sudden unexpected stimulus.
References in periodicals archive ?
Startle response is such as might be caused by a sudden sound from one's left.
Indeed, there is evidence to suggest that startle response is attenuated when attention is directed to a different modality than the startle probe (Schicatano & Blumenthal, 1998), particularly when the task to be completed in this modality is complex (Neumann, 2002).
Acoustic startle response in patients with orthostatic tremor.
Demonstrating habituation of a startle response to loud noise.
Habituation of the ultrasound-induced Acoustic startle response in flying crickets.
1997; Fernandez-Teruel, Gimenez-Llort, Escorihuela, Gil, Aguilar, Steimer, & Tobena, 2002c; Steimer & Driscoll, 2003, 2005), in the Vogel's punishment test (Corda, Piras, Valentini, Scano, & Giorgi, 1998; Ferre, Fernandez-Teruel, Escorihuela, Driscoll, Corda, Giorgi, & Tobena, 1995), in baseline and stress-enhanced acoustic startle response (Aguilar, Gil, Tobena, Escorihuela, & Fernandez-Teruel, 2000; Yilmazer-Hanke, Faber-Zuschratter, Linke, & Schwegler, 2002), and in several procedures of frustrative non-reward (Rosas, Callejas-Aguilera, Escarabajal, Gomez, de la Torre, Aguero, Tobena, Fernandez-Teruel, & Torres, 2007; Torres, Cendido, Escarabajal, de la Torre, Maldonado, Tobena, & Fernandez-Teruel, 2005).
Symptoms involve re-experiencing the trauma in flashbacks or nightmares, avoiding reminders of the trauma, an emotional numbness, exaggerated startle response and, often, depression.
This acute stress response is marked by the same three classes of symptoms that define PTSD: intrusive syrup toms such as flashbacks and nightmares, avoidance behavior, and hyperarousal as evidenced by insomnia, inability to concentrate, and an exaggerated startle response.
On examination, the child showed an exaggerated startle response with symmetrical myoclonic jerking of limbs on tapping the nasal tip or glabella.
Symptoms involve reexperiencing the trauma in flashbacks or nightmares, avoiding reminders of the trauma, an emotional numbness, exaggerated startle response and, often, depression.
Symptoms of increased arousal such as insomnia, irritability, poor concentration and exaggerated startle response are common.